SOLUTION: A company specializing in magazine sales over the telephone found that in 2500 phone calls, 360 resulted in sales and were made by male callers, and 480 resulted in sales and were

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Question 112291: A company specializing in magazine sales over the telephone found that in 2500 phone calls, 360 resulted in sales and were made by male callers, and 480 resulted in sales and were made by female callers. If the company gets twice as many sales per call with a woman's voice than with a man's voice, then how many of the 2500 calls were made by females?
I got stuck with this one too. I started an equation but I don't think it's right. I have 2500/360 = 6.95 and 2500/480 = 5.21. I'm not sure that this is right and I don't know where to go from here?

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x="female calls", so 2500-x="male calls"

480/x=2(360/(2500-x)) ___ 480(2500-x)=720x ___ 2(2500-x)=3x